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CH(3)CHO and C(6)H(5)CH(2)CHO can be dis...

`CH_(3)CHO and C_(6)H_(5)CH_(2)CHO` can be distinguished chemically by

A

Benedict test

B

iodoform test

C

Tollen's reagent test

D

Fehling solution

Text Solution

Verified by Experts

The correct Answer is:
B
`CH_(3)CHO and C_(6)H_(5)CH_(2)CHO` both eing aliphatic aldehydes react with Tollen's reagent, fehling solution and Benedict solution. So, these reagents cannot be used to distinguish them
`CH_(3)CHO` due to the presence of `(CH_(3)-overset(O)overset(||)(C)-)` group reacts with NaOH and `I_(2)` to give yellow crystals of iodoform while `C_(6)H_(5)CH_(2)CHO` does not reat with it `CH_(3)CHO+3I_(2)+4NaOHtoCHI_(3)+HCOONa+3NaI+3H_(2)O`
`C_(6)H_(5)CH_(2)CHO+I_(2)+NaOHto`No reaction
Thus, `CH_(3)CHO` and `C_(6)H_(5)CH_(2)CHO` can be distinguished by iodoform test.
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